Chemistry coursework rate of reaction variables

Chemistry coursework rate of reaction variables

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Home chemistry coursework rate of reaction variables

Rates of Reaction - Magnesium and HCL

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When I plotted my graphs using these results it proves my prediction was correct and that a higher concentration speeds up a reaction.

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Chemistry Gcse Coursework Rates of Reaction

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Steer the mixture Start the stop watch Stop the clock when the cross disappears.

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Rate of Reaction

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Where as when the STS was at 40ml the average time was 32 seconds which shows a very big relationship between the amount of STS and the time taken. Before rtae experiment, we carried out a number of other experiments in order to investigate the affect of things like concentration and temperature had on a chemistry coursework rate of reaction variables between an acid and usually marble

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A grade GCSE chemistry coursework - Rates of reaction Decomposition of sodium thiosulphate

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The evidence I have obtained might not be reliable because the room temperature chemistry coursework rate of reaction variables not the same all the time, the equipment might not be washed properly, and the stop watch might have started just a second late. I recorded the results on a table and below are my results case study 3 gate of experiments done to make it a fair test.

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Chemistry Coursework

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This means more of the particles collide and more of the collisions result in a reaction, so the rate of reaction increases. As well as in my preliminary test I also repeated the test three times so that I could see the results were accurate and precise.

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I am, however due to my line of enquiry, going to change the temperature of the solution. Below is a table to show the effect of changing different variables.

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In the following experiments we will investigate how the concentration of the reactants affect the rate of reaction

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Games, Toys, and Hobbies.

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HubPages Tutorials and Community.

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The tables which i wrote the results into also show that the results are reliable as they are similar.

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Maybe using a better timer to record my results would have granted me more accurate results. Therefore this applies to the accuracy of the test.

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Start with 20cm3 To get 1. My results support my prediction because it shows that the prediction was correct.

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The aim of this investigation is to work out which reacts faster, concentrated acid or diluted acid.

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Thus we can rewrite the equation in a more convenient manner:

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The readings could have also been made more accurate if we got down at eye level with the tube and got the exact readings at teh time needed. Apparatus Apparatus The apparatus I will use in this experiment are as follows:

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In this experiment, we utilized the ability for the iodide ion to become oxidized by the persulphate ion. The reaction is represented by the following equation:

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The reasons for this could be that because when the temperature is high oc is more collision taking place therefore more energy is produces because old bonds are broken and new bonds are formed. A speed on which the reaction takes place is called and rate of reaction.

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Therefore allowing me to create an accurate test and allowing me to obtain precise results. I made sure that I was wearing my safety goggles whilst I business essay out my test.

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I will judge if the reaction is fast or slow by observing the bubbles which occur during the reaction and also observe if the Magnesium has disappeared. However in the 2 molar STS solution the rate of reaction was quick.

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I will measure the temperature using a thermometer. This was due to the concentration of the STS solution.

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In addition to this, more particles have activation energy.

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I could improve the procedure by doing the experiment in a room where the temperature stays consistent.

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Well written and very informative!

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I will also try to make my timing and the heating of the sodium thiosulphate solution as accurate as possible. I first picked the type of experiment I was going to do.

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My results were outstanding seen as though I had no outliers or the error bars on my graph are very small. On the other hand I am very confident with my results.

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A higher temperature gives the particles more energy, therefore the rate of collisions becomes more frequent.

Help me out by checking out this book I helped co-edit.

As well as in my preliminary test I also repeated the test three times so that I could see the coursewwork were accurate and precise. Evaluation All of my results were accurate and fitted the pattern of results.

Taken as a whole I can see that my experiment went very well. Get feedback on grammar, clarity, concision and logic instantly. Adding a catalyst to a reaction will speed it up without adding or taking anything away from it. This is because as the temperature increases, the reactant particles move more quickly. In the following experiments we will investigate how the concentration of the reactants affect the rate of reaction This suggested that my experiment was carried out very accurately.

Get a plain blank paper and put a cross on it with black ink, put the cross on the side. I will keep everything constant apart from the variable I am changing-temperature. These are 1 Concentration. I can see from observing the table that the first part of my prediction was correct.

As the concentration of the hydrochloric acid increases, so will the rate of reaction Hypothesis: Rate of Reaction Length: On the other hand I am very confident with my results. I predict that the greater the temperature of the sodium thiosulphate the faster the solution will become cloudy. Evaluation All of my results were accurate and fitted the pattern of results. Some of the things that affect the rate of reaction are:

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